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Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston and Ring Kits

Dirt Bike Piston & Ring Kits for Yamaha YZ85, WR250 & YZ250 at JJ Motorsports

Rebuild your dirt bike's top end for maximum power and reliability with premium piston and ring kits from JJ Motorsports, forged from high-strength aluminum for superior heat resistance, lightweight performance, and precise fit in motocross, enduro, and trail riding. Our selection includes complete kits with pistons, high-performance rings, wrist pins, circlips, top-end bearings, and gaskets designed for enhanced combustion efficiency, reduced blow-by, and longer engine life under high-RPM abuse. Compatible with popular models like Yamaha YZ85 (2002-2018), WR250, and YZ250, these Wiseco-engineered components feature CNC-machined crowns for optimal cam shape, ArmorGlide skirt coatings for low friction, and 4032 alloy construction for durability in dusty, aggressive conditions. Whether you're refreshing a youth 85cc 2-stroke or upgrading a 250cc big bore, these kits ensure crisp throttle response, better sealing, and race-ready power without the need for custom boring—perfect for DIY rebuilds or pro-level maintenance.

Shop trusted brands like Wiseco for race-proven quality. Explore related categories such as dirt bike engine for cylinders and valves or dirt bike air and fuel for carburetors and jets.

Top Dirt Bike Piston & Ring Kits

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Wiseco Piston Kit 88mm 13:1 Compression for KTM 350EXC-F 2012-2016 PK1896

    Wiseco Piston Kit 88mm 13:1 Compression for KTM 350EXC-F 2012-2016 PK1896

    WISECO

    $319.95
    If you're running a KTM 350EXC-F and want measurable gains in throttle response and combustion efficiency, the Wiseco PK1896 piston kit delivers the compression ratio and precision engineering to unlock real performance. The 13:1 compression ratio and...
    09031140
    SKU:
    09031140
    Availability:
    Ships Same Business Day
    Weight:
    1.55 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    RIDING STYLE:
    STREET
    STROKE LENGTH METRIC:
    57.50 MM
    BORE SIZE METRIC:
    88.00 MM
    COMPRESSION RATIO IMPERIAL:
    13.0:1
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    87.96 MM
    PISTON MATERIAL:
    2618 ALUMINUM ALLOY
    PRODUCT NAME:
    REBUILD KIT
    DISPLACEMENT:
    350 CC
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    UNITS:
    KIT
    MODEL:
    FORGED SERIES
    TYPE:
    TOP END
    Qty in Cart: 0
    Quantity:
    Price:
    $319.95
    Subtotal:
  • Wiseco Piston Kit with Gasket Yamaha YZ250F 2014-2015 PK1899

    Wiseco Piston Kit with Gasket Yamaha YZ250F 2014-2015 PK1899

    WISECO

    $314.95
    If you're running a YZ250F 2014-2015 at the limit, your factory piston won't keep up. Wiseco's forged piston kit delivers the compression ratio and durability needed for consistent power delivery, whether you're pushing hard on the track or putting in...
    09031143
    SKU:
    09031143
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    PISTON MATERIAL:
    2618 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    REBUILD KIT
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    77.00 MM
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    DISPLACEMENT:
    250 CC
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    76.96 MM
    MODEL:
    FORGED SERIES
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    53.60 MM
    TYPE:
    TOP END
    UNITS:
    KIT
    $314.95
    Qty in Cart: 0
    Quantity:
    Price:
    $314.95
    Subtotal:
  • Wiseco Honda CR85R 2003-2007 Piston Kit with Gaskets PK1215

    Wiseco Honda CR85R 2003-2007 Piston Kit with Gaskets PK1215

    WISECO

    $169.95
    When your Honda CR85R demands a refresh, a quality piston kit isn't optional—it's essential for restoring compression, sealing integrity, and reliable power delivery. Wiseco's PK1215 combines precision engineering with durable materials to keep your...
    09030670
    SKU:
    09030670
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    48.00 MM
    PRODUCT NAME:
    REBUILD KIT
    ENGINE TYPE:
    2-STROKE
    MODEL:
    PRO-LITE
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    BORE - OVERSIZE:
    +0,50 MM
    SKIRT COATING:
    NON-COATED
    STROKE LENGTH METRIC:
    47.80 MM
    UNITS:
    KIT
    DISPLACEMENT:
    84.7 CC
    PISTON DIAMETER METRIC:
    47.95 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $169.95
    Subtotal:
  • Wiseco Piston Kit Suzuki RM125 1989-1999 641M05550

    Wiseco Piston Kit Suzuki RM125 1989-1999 641M05550

    WISECO

    $189.95
    The Wiseco 641M05550 piston kit restores your RM125 to factory specs or boosts performance beyond stock parameters, depending on your build goals. High-silicon aluminum construction and precision CNC machining ensure reliable power delivery across the...
    09101218
    SKU:
    09101218
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    PRODUCT NAME:
    PISTON
    BORE - OVERSIZE:
    +1,50 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    54.00 MM
    BORE - OVERSIZE METRIC:
    +1.50 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    BORE SIZE METRIC:
    55.50 MM
    DISPLACEMENT:
    123 CC
    MODEL:
    PRO-LITE
    $189.95
    Qty in Cart: 0
    Quantity:
    Price:
    $189.95
    Subtotal:
  • Wiseco Piston Kit 57mm 11:1 Compression for Kawasaki KLX125 2002-2006 4815M05700

    Wiseco Piston Kit 57mm 11:1 Compression for Kawasaki KLX125 2002-2006 4815M05700

    WISECO

    $154.95
    Stock pistons limit your KLX125's potential, especially when you're pushing harder on the trail or track. The Wiseco 57mm piston kit delivers a measurable bump in compression ratio and RPM capability, translating directly to stronger throttle response...
    09100359
    SKU:
    09100359
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    57.00 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    DISPLACEMENT:
    125 CC
    ENGINE TYPE:
    4-STROKE
    UNITS:
    EACH
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    48.80 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $154.95
    Subtotal:
  • Wiseco Piston Kit Yamaha YZ250 2002-2016 808M06640

    Wiseco Piston Kit Yamaha YZ250 2002-2016 808M06640

    WISECO

    $209.95
    Stock pistons wear faster under racing conditions, compromising compression and throttle response when you need them most. The Wiseco Piston Kit restores—and exceeds—factory performance through precision engineering and advanced materials designed...
    09100367
    SKU:
    09100367
    Availability:
    Ships Same Business Day
    Weight:
    0.68 LBS
    DISPLACEMENT:
    249.3 CC
    STROKE LENGTH METRIC:
    72.00 MM
    ENGINE TYPE:
    2-STROKE
    MODEL:
    RACER'S CHOICE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    BORE SIZE METRIC:
    66.40 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PRODUCT NAME:
    PISTON
    Qty in Cart: 0
    Quantity:
    Price:
    $209.95
    Subtotal:
  • Wiseco 77mm Piston Kit for 1986-2004 Honda XR250R 4466M07700

    Wiseco 77mm Piston Kit for 1986-2004 Honda XR250R 4466M07700

    WISECO

    $219.95
    If you're running an XR250R hard on the trail or track, your factory piston is likely the weakest link in your engine. This Wiseco kit replaces it with a high-silicon aluminum forging that handles aggressive riding, higher boost loads, and extended...
    09100754
    SKU:
    09100754
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    DISPLACEMENT:
    250 CC
    BORE - OVERSIZE:
    +4,00 MM
    BORE - OVERSIZE METRIC:
    +4.00 MM
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    77.00 MM
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    ENGINE TYPE:
    4-STROKE
    UNITS:
    EACH
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON
    STROKE LENGTH METRIC:
    59.50 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $219.95
    Subtotal:
  • Wiseco Piston Kit Standard 78mm 13.5:1 Honda CRF250R 2004-2007 4852M07800

    Wiseco Piston Kit Standard 78mm 13.5:1 Honda CRF250R 2004-2007 4852M07800

    WISECO

    $266.95
    Stock pistons wear faster and limit your CRF250R's potential—a quality replacement is essential for maintaining compression, power delivery, and engine longevity. The Wiseco 13.5:1 piston kit delivers measurable gains in throttle response and efficiency...
    09100756
    SKU:
    09100756
    Availability:
    Ships Same Business Day
    Weight:
    0.52 LBS
    BORE SIZE METRIC:
    78.00 MM
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    13.5:1
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    DISPLACEMENT:
    249 CC
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    STROKE LENGTH METRIC:
    52.20 MM
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $266.95
    Subtotal:
  • Wiseco Piston Kit Standard Kawasaki KX65 2000-2020 861M04450

    Wiseco Piston Kit Standard Kawasaki KX65 2000-2020 861M04450

    WISECO

    $134.95
    Stock pistons are a limiting factor for any KX65 owner serious about performance. The Wiseco Piston Kit replaces the weak link with a precision-engineered component that improves combustion efficiency, increases power output, and delivers measurably...
    09100761
    SKU:
    09100761
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    BORE SIZE METRIC:
    44.50 MM
    PRODUCT NAME:
    PISTON
    DISPLACEMENT:
    64 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    STROKE LENGTH METRIC:
    41.60 MM
    $134.95
    Qty in Cart: 0
    Quantity:
    Price:
    $134.95
    Subtotal:
  • Wiseco Piston Kit Standard Bore 47mm KTM 85 SX 2003-2021 855M04700

    Wiseco Piston Kit Standard Bore 47mm KTM 85 SX 2003-2021 855M04700

    WISECO

    $132.95
    The Wiseco Piston Kit is engineered for KTM 85 SX riders who demand reliability and consistent performance from their two-stroke engine. A worn or compromised piston directly impacts throttle response, compression efficiency, and overall engine...
    09030586
    SKU:
    09030586
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    DISPLACEMENT:
    85 CC
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    UNITS:
    EACH
    BORE SIZE METRIC:
    47.00 MM
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    SKIRT COATING:
    ARMORGLIDE®
    STROKE LENGTH METRIC:
    48.95 MM
    $132.95
    Qty in Cart: 0
    Quantity:
    Price:
    $132.95
    Subtotal:
  • Wiseco Piston Kit Standard 95mm 12:1 Compression KTM 450 SX-F 2003-2006 4805M09500

    Wiseco Piston Kit Standard 95mm 12:1 Compression KTM 450 SX-F 2003-2006 4805M09500

    WISECO

    $254.95
    If you're running a KTM 450 SX-F from 2003-2006 and want measurable gains in peak horsepower and throttle response, a high-compression piston kit is one of the most direct bolt-on upgrades available. Wiseco's 12:1 compression dome combined with their...
    09100784
    SKU:
    09100784
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    BORE - OVERSIZE:
    STANDARD
    ENGINE TYPE:
    4-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    BORE - OVERSIZE METRIC:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    12.0:1
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    PISTON
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    95.00 MM
    DISPLACEMENT:
    449 CC
    STROKE LENGTH METRIC:
    63.40 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $254.95
    Subtotal:
  • Wiseco Piston Honda CRF450R 2002-2008 4466M07350

    Wiseco Piston Honda CRF450R 2002-2008 4466M07350

    WISECO

    $194.95
    Your CRF450R's stock piston may handle everyday riding, but if you're pushing harder—whether on the track or in aggressive trail conditions—wear and loss of compression will eventually rob you of performance. The Wiseco Piston Kit for your 2002-2008...
    4466M07350
    SKU:
    4466M07350
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    PISTON DIAMETER METRIC:
    73.45 MM
    BORE - OVERSIZE:
    +0,50 MM
    BORE - OVERSIZE METRIC:
    +0.50 MM
    BORE SIZE METRIC:
    73.50 MM
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    STROKE LENGTH METRIC:
    59.50 MM
    DISPLACEMENT:
    250 CC
    ENGINE TYPE:
    4-STROKE
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    NON-COATED
    Qty in Cart: 0
    Quantity:
    Price:
    $194.95
    Subtotal:
  • Wiseco Piston Honda CRF450R 2002-2008 4466M07400

    Wiseco Piston Honda CRF450R 2002-2008 4466M07400

    WISECO

    $210.95
    A worn or damaged piston directly compromises your engine's compression, power delivery, and reliability—making a quality rebuild essential for any serious rider. The Wiseco Piston Kit delivers the precision engineering and durable construction needed to...
    4466M07400
    SKU:
    4466M07400
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    74.00 MM
    DISPLACEMENT:
    250 CC
    ENGINE TYPE:
    4-STROKE
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    SKIRT COATING:
    NON-COATED
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +1,00 MM
    PISTON DIAMETER METRIC:
    73.95 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    STROKE LENGTH METRIC:
    59.50 MM
    $210.95
    Qty in Cart: 0
    Quantity:
    Price:
    $210.95
    Subtotal:
  • Wiseco Piston Kit 67mm 1980-1982 Kawasaki KDX175 469M06700

    Wiseco Piston Kit 67mm 1980-1982 Kawasaki KDX175 469M06700

    WISECO

    $154.95
    Stock pistons wear out—and when they do, your KDX175's compression, throttle response, and reliability suffer. The Wiseco 469M06700 restores lost performance while delivering the durability competitive riders demand. This complete kit includes rings and...
    469M06700
    SKU:
    469M06700
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    BORE - OVERSIZE:
    +1,00 MM
    DISPLACEMENT:
    173 CC
    PISTON DIAMETER METRIC:
    66.95 MM
    PISTON MATERIAL:
    4032 ALUMINUM ALLOY
    STROKE LENGTH METRIC:
    50.60 MM
    BORE - OVERSIZE METRIC:
    +1.00 MM
    BORE SIZE METRIC:
    67.00 MM
    ENGINE TYPE:
    2-STROKE
    SKIRT COATING:
    NON-COATED
    UNITS:
    KIT
    MODEL:
    FORGED SERIES
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    Qty in Cart: 0
    Quantity:
    Price:
    $154.95
    Subtotal:
  • Wossner Piston Kit Honda CR250R 1997-2001 66.34mm 8001DA

    Wossner Piston Kit Honda CR250R 1997-2001 66.34mm 8001DA

    WOSSNER

    $152.00
    If you're running a CR250R and looking to restore or exceed factory performance, a quality piston kit is non-negotiable. Wossner's 8001DA delivers the durability and precision needed for consistent power delivery across your entire RPM range, whether...
    09104684
    SKU:
    09104684
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE - OVERSIZE METRIC:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.34 MM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    66.40 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit Honda CR250R 1997-2001 8001DC

    Wossner Piston Kit Honda CR250R 1997-2001 8001DC

    WOSSNER

    $152.00
    A worn or damaged piston directly compromises your CR250R's power delivery, throttle response, and engine longevity. The Wossner 8001DC addresses this with a complete, ready-to-install kit engineered to restore factory performance while improving...
    09104686
    SKU:
    09104686
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    BORE SIZE METRIC:
    66.42 MM
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    DISPLACEMENT:
    249 CC
    ENGINE TYPE:
    2-STROKE
    PISTON SIZE METRIC:
    66.36 MM
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE - OVERSIZE:
    +0,02 MM
    BORE - OVERSIZE METRIC:
    +0.02 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Wossner Piston Kit Kawasaki KDX125 1990-2005 8008DB

    Wossner Piston Kit Kawasaki KDX125 1990-2005 8008DB

    WOSSNER

    $142.00
    If you're running a KDX125 on the track or trail, piston durability and ring sealing are non-negotiable. The Wossner 8008DB replaces worn or damaged pistons with a forged aluminum unit engineered to handle sustained high RPM and load cycles without...
    09104708
    SKU:
    09104708
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    BORE - OVERSIZE METRIC:
    +0.01 MM
    UNITS:
    KIT
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    PISTON KIT
    BORE - OVERSIZE:
    +0,01 MM
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    55.95 MM
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    56.01 MM
    PISTON MATERIAL:
    FORGED
    TYPE:
    DUAL RING
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Piston Kit 54.44mm Honda NSR125R 1990–2001 8019D050

    Wossner Piston Kit 54.44mm Honda NSR125R 1990–2001 8019D050

    WOSSNER

    $144.95
    If you're running an NSR125R in competition or pushing it hard on the street, piston wear directly impacts your power delivery and engine longevity. The Wössner 8019D050 kit delivers the precision engineering and material science you need to maintain...
    09104716
    SKU:
    09104716
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    BORE - OVERSIZE METRIC:
    +0.50 MM
    DISPLACEMENT:
    124 CC
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    BORE SIZE METRIC:
    54.50 MM
    PISTON SIZE METRIC:
    54.44 MM
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,50 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    MODEL:
    STANDARD SERIES
    PRODUCT NAME:
    PISTON KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $144.95
    Subtotal:
  • Wossner Piston Kit for Honda NSR125R 1991-1996 8019DB

    Wossner Piston Kit for Honda NSR125R 1991-1996 8019DB

    WOSSNER

    $142.00
    The Wossner 8019DB piston kit delivers the precision and durability demanded by serious Honda NSR125R racers and high-performance builders. Factory OEM pistons can't match the strength of 4032 T6 forged aluminum or the friction-reducing skirt coating...
    09104718
    SKU:
    09104718
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PISTON MATERIAL:
    FORGED
    ENGINE TYPE:
    2-STROKE
    PRODUCT NAME:
    PISTON KIT
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,01 MM
    BORE - OVERSIZE METRIC:
    +0.01 MM
    DISPLACEMENT:
    124 CC
    MODEL:
    STANDARD SERIES
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    BORE SIZE METRIC:
    54.01 MM
    PISTON SIZE METRIC:
    53.95 MM
    $142.00
    Qty in Cart: 0
    Quantity:
    Price:
    $142.00
    Subtotal:
  • Wossner Piston Kit 66.94mm Kawasaki KX250 1992-2001 8026D060

    Wossner Piston Kit 66.94mm Kawasaki KX250 1992-2001 8026D060

    WOSSNER

    $152.00
    Stock pistons in your 1992–2001 KX250 are engineered for reliability, not longevity under sustained racing conditions. The Wossner 8026D060 kit replaces worn or damaged pistons with German-engineered components that reduce friction, minimize piston rock,...
    09104739
    SKU:
    09104739
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    MODEL:
    STANDARD SERIES
    PISTON SIZE METRIC:
    66.94 MM
    PRODUCT NAME:
    PISTON KIT
    BORE SIZE METRIC:
    67.00 MM
    PISTON MATERIAL:
    FORGED
    UNITS:
    KIT
    BORE - OVERSIZE METRIC:
    +0.60 MM
    DISPLACEMENT:
    249 CC
    TYPE:
    DUAL RING
    BORE - OVERSIZE:
    +0,60 MM
    ENGINE TYPE:
    2-STROKE
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $152.00
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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